Hierarchy view now available in GitHub Projects

GitHub Projects now supports hierarchy view in public preview, allowing users to visualize issue hierarchies up to eight levels deep directly in table views. The feature enables expanding/collapsing sub-issues while maintaining grouping, sorting, and filtering capabilities. Future updates will add inline sub-issue creation, drag-and-drop reordering, and synced ordering. Additional improvements include performance enhancements reducing issue load times, a new View menu, REST API endpoint for creating project views, and better pull request integration.